Question: Is there an ICD-9 code I can use to report belching? -- Arkansas Subscriber Answer: Yes. You should use 787.3 (Flatulence, eructation, and gas pain) for belching. Reasoning: Belching is also known as eructation. This involves the release of gas from the stomach and/or esophagus through the mouth, usually accompanied by sound and occasionally unpleasant odor. This is typically caused by swallowing air during eating and drinking.